i have a camper shell and in a similar fashion, I wanted lights to load and unload my camper when my truck was off (most camper installers will tap into your rear lights so your key has to be turned on...i asked to run a hot wire to my LED's...might be another way to look at what you are doing especially if you are already running bed LED's.... (FYI, I ran a strip LED light all the way around my camper shell...works fantastic...here are some pics...i can give you more if you were interested...but the gist is, post relay switch, i ran all my wires in one of those black plastic sleeves, everything looks stock under the hood unless you really are looking for it...